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  <LI><FONT=20
  =
color=3D#000080>=E6=8A=BD=E8=B1=A1=E7=AD=96=E7=95=A5=EF=BC=88Strategy=EF=BC=
=89=E8=A7=92=E8=89=B2</FONT>=EF=BC=9A=E8=BF=99=E6=98=AF=E4=B8=80=E4=B8=AA=
=E6=8A=BD=E8=B1=A1=E8=A7=92=E8=89=B2=EF=BC=8C=E9=80=9A=E5=B8=B8=E7=94=B1=E4=
=B8=80=E4=B8=AA=E6=8E=A5=E5=8F=A3=E6=88=96=E6=8A=BD=E8=B1=A1=E7=B1=BB=E5=AE=
=9E=E7=8E=B0=E3=80=82=E6=AD=A4=E8=A7=92=E8=89=B2=E7=BB=99=E5=87=BA=E6=89=80=
=E6=9C=89=E7=9A=84=E5=85=B7=E4=BD=93=E7=AD=96=E7=95=A5=E7=B1=BB=E6=89=80=E9=
=9C=80=E7=9A=84=E6=8E=A5=E5=8F=A3=E3=80=82=20

  <LI><FONT =
color=3D#000080>=E5=85=B7=E4=BD=93=E7=AD=96=E7=95=A5=EF=BC=88ConcreteStra=
tegy=EF=BC=89=E8=A7=92=E8=89=B2</FONT>=EF=BC=9A=E5=8C=85=E8=A3=85=E4=BA=86=
=E7=9B=B8=E5=85=B3=E7=9A=84=E7=AE=97=E6=B3=95=E6=88=96=E8=A1=8C=E4=B8=BA=E3=
=80=82</LI></UL>
<H2><BR>=E4=B8=89=E3=80=81&nbsp;=E7=A4=BA=E6=84=8F=E6=80=A7=E6=BA=90=E4=BB=
=A3=E7=A0=81</H2>
<DIV=20
style=3D"BORDER-RIGHT: windowtext 0.5pt solid; PADDING-RIGHT: 5.4pt; =
BORDER-TOP: windowtext 0.5pt solid; PADDING-LEFT: 5.4pt; BACKGROUND: =
#e6e6e6; PADDING-BOTTOM: 4px; BORDER-LEFT: windowtext 0.5pt solid; =
WIDTH: 98%; WORD-BREAK: break-all; PADDING-TOP: 4px; BORDER-BOTTOM: =
windowtext 0.5pt solid">
<DIV><IMG =
src=3D"http://www.cnblogs.com/Images/OutliningIndicators/None.gif"=20
align=3Dtop><SPAN style=3D"COLOR: #008000">//</SPAN><SPAN=20
style=3D"COLOR: =
#008000">&nbsp;Strategy&nbsp;pattern&nbsp;--&nbsp;Structural&nbsp;example=
&nbsp;&nbsp;</SPAN><SPAN=20
style=3D"COLOR: #008000"><BR><IMG=20
src=3D"http://www.cnblogs.com/Images/OutliningIndicators/None.gif"=20
align=3Dtop></SPAN><SPAN style=3D"COLOR: #0000ff">using</SPAN><SPAN=20
style=3D"COLOR: #000000">&nbsp;System;<BR><IMG=20
src=3D"http://www.cnblogs.com/Images/OutliningIndicators/None.gif"=20
align=3Dtop><BR><IMG=20
src=3D"http://www.cnblogs.com/Images/OutliningIndicators/None.gif"=20
align=3Dtop></SPAN><SPAN style=3D"COLOR: #008000">//</SPAN><SPAN=20
style=3D"COLOR: #008000">&nbsp;"Strategy"</SPAN><SPAN=20
style=3D"COLOR: #008000"><BR><IMG=20
src=3D"http://www.cnblogs.com/Images/OutliningIndicators/None.gif"=20
align=3Dtop></SPAN><SPAN style=3D"COLOR: #0000ff">abstract</SPAN><SPAN=20
style=3D"COLOR: #000000">&nbsp;</SPAN><SPAN=20
style=3D"COLOR: #0000ff">class</SPAN><SPAN=20
style=3D"COLOR: #000000">&nbsp;Strategy<BR><IMG=20
id=3DCodehighlighter1_97_157_Open_Image=20
onclick=3D"this.style.display=3D'none'; =
Codehighlighter1_97_157_Open_Text.style.display=3D'none'; =
Codehighlighter1_97_157_Closed_Image.style.display=3D'inline'; =
Codehighlighter1_97_157_Closed_Text.style.display=3D'inline';"=20
src=3D"http://www.cnblogs.com/Images/OutliningIndicators/ExpandedBlockSta=
rt.gif"=20
align=3Dtop><IMG id=3DCodehighlighter1_97_157_Closed_Image =
style=3D"DISPLAY: none"=20
onclick=3D"this.style.display=3D'none'; =
Codehighlighter1_97_157_Closed_Text.style.display=3D'none'; =
Codehighlighter1_97_157_Open_Image.style.display=3D'inline'; =
Codehighlighter1_97_157_Open_Text.style.display=3D'inline';"=20
src=3D"http://www.cnblogs.com/Images/OutliningIndicators/ContractedBlock.=
gif"=20
align=3Dtop></SPAN><SPAN id=3DCodehighlighter1_97_157_Closed_Text=20
style=3D"BORDER-RIGHT: #808080 1px solid; BORDER-TOP: #808080 1px solid; =
DISPLAY: none; BORDER-LEFT: #808080 1px solid; BORDER-BOTTOM: #808080 =
1px solid; BACKGROUND-COLOR: #ffffff"><IMG=20
src=3D"http://www.cnblogs.com/Images/dot.gif"></SPAN><SPAN=20
id=3DCodehighlighter1_97_157_Open_Text><SPAN style=3D"COLOR: =
#000000">{<BR><IMG=20
src=3D"http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif"=20
align=3Dtop>&nbsp;&nbsp;</SPAN><SPAN style=3D"COLOR: =
#008000">//</SPAN><SPAN=20
style=3D"COLOR: #008000">&nbsp;Methods</SPAN><SPAN style=3D"COLOR: =
#008000"><BR><IMG=20
src=3D"http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif"=20
align=3Dtop></SPAN><SPAN style=3D"COLOR: =
#000000">&nbsp;&nbsp;</SPAN><SPAN=20
style=3D"COLOR: #0000ff">abstract</SPAN><SPAN=20
style=3D"COLOR: #000000">&nbsp;</SPAN><SPAN=20
style=3D"COLOR: #0000ff">public</SPAN><SPAN=20
style=3D"COLOR: #000000">&nbsp;</SPAN><SPAN=20
style=3D"COLOR: #0000ff">void</SPAN><SPAN=20
style=3D"COLOR: #000000">&nbsp;AlgorithmInterface();<BR><IMG=20
src=3D"http://www.cnblogs.com/Images/OutliningIndicators/ExpandedBlockEnd=
.gif"=20
align=3Dtop>}</SPAN></SPAN><SPAN style=3D"COLOR: #000000"><BR><IMG=20
src=3D"http://www.cnblogs.com/Images/OutliningIndicators/None.gif"=20
align=3Dtop><BR><IMG=20
src=3D"http://www.cnblogs.com/Images/OutliningIndicators/None.gif"=20
align=3Dtop></SPAN><SPAN style=3D"COLOR: #008000">//</SPAN><SPAN=20
style=3D"COLOR: #008000">&nbsp;"ConcreteStrategyA"</SPAN><SPAN=20
style=3D"COLOR: #008000"><BR><IMG=20
src=3D"http://www.cnblogs.com/Images/OutliningIndicators/None.gif"=20
align=3Dtop></SPAN><SPAN style=3D"COLOR: #0000ff">class</SPAN><SPAN=20
style=3D"COLOR: =
#000000">&nbsp;ConcreteStrategyA&nbsp;:&nbsp;Strategy<BR><IMG=20
id=3DCodehighlighter1_218_357_Open_Image=20
onclick=3D"this.style.display=3D'none'; =
Codehighlighter1_218_357_Open_Text.style.display=3D'none'; =
Codehighlighter1_218_357_Closed_Image.style.display=3D'inline'; =
Codehighlighter1_218_357_Closed_Text.style.display=3D'inline';"=20
src=3D"http://www.cnblogs.com/Images/OutliningIndicators/ExpandedBlockSta=
rt.gif"=20
align=3Dtop><IMG id=3DCodehighlighter1_218_357_Closed_Image =
style=3D"DISPLAY: none"=20
onclick=3D"this.style.display=3D'none'; =
Codehighlighter1_218_357_Closed_Text.style.display=3D'none'; =
Codehighlighter1_218_357_Open_Image.style.display=3D'inline'; =
Codehighlighter1_218_357_Open_Text.style.display=3D'inline';"=20
src=3D"http://www.cnblogs.com/Images/OutliningIndicators/ContractedBlock.=
gif"=20
align=3Dtop></SPAN><SPAN id=3DCodehighlighter1_218_357_Closed_Text=20
style=3D"BORDER-RIGHT: #808080 1px solid; BORDER-TOP: #808080 1px solid; =
DISPLAY: none; BORDER-LEFT: #808080 1px solid; BORDER-BOTTOM: #808080 =
1px solid; BACKGROUND-COLOR: #ffffff"><IMG=20
src=3D"http://www.cnblogs.com/Images/dot.gif"></SPAN><SPAN=20
id=3DCodehighlighter1_218_357_Open_Text><SPAN style=3D"COLOR: =
#000000">{<BR><IMG=20
src=3D"http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif"=20
align=3Dtop>&nbsp;&nbsp;</SPAN><SPAN style=3D"COLOR: =
#008000">//</SPAN><SPAN=20
style=3D"COLOR: #008000">&nbsp;Methods</SPAN><SPAN style=3D"COLOR: =
#008000"><BR><IMG=20
src=3D"http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif"=20
align=3Dtop></SPAN><SPAN style=3D"COLOR: =
#000000">&nbsp;&nbsp;</SPAN><SPAN=20
style=3D"COLOR: #0000ff">override</SPAN><SPAN=20
style=3D"COLOR: #000000">&nbsp;</SPAN><SPAN=20
style=3D"COLOR: #0000ff">public</SPAN><SPAN=20
style=3D"COLOR: #000000">&nbsp;</SPAN><SPAN=20
style=3D"COLOR: #0000ff">void</SPAN><SPAN=20
style=3D"COLOR: #000000">&nbsp;AlgorithmInterface()<BR><IMG=20
id=3DCodehighlighter1_279_355_Open_Image=20
onclick=3D"this.style.display=3D'none'; =
Codehighlighter1_279_355_Open_Text.style.display=3D'none'; =
Codehighlighter1_279_355_Closed_Image.style.display=3D'inline'; =
Codehighlighter1_279_355_Closed_Text.style.display=3D'inline';"=20
src=3D"http://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlock=
Start.gif"=20
align=3Dtop><IMG id=3DCodehighlighter1_279_355_Closed_Image =
style=3D"DISPLAY: none"=20
onclick=3D"this.style.display=3D'none'; =
Codehighlighter1_279_355_Closed_Text.style.display=3D'none'; =
Codehighlighter1_279_355_Open_Image.style.display=3D'inline'; =
Codehighlighter1_279_355_Open_Text.style.display=3D'inline';"=20
src=3D"http://www.cnblogs.com/Images/OutliningIndicators/ContractedSubBlo=
ck.gif"=20
align=3Dtop>&nbsp;&nbsp;</SPAN><SPAN =
id=3DCodehighlighter1_279_355_Closed_Text=20
style=3D"BORDER-RIGHT: #808080 1px solid; BORDER-TOP: #808080 1px solid; =
DISPLAY: none; BORDER-LEFT: #808080 1px solid; BORDER-BOTTOM: #808080 =
1px solid; BACKGROUND-COLOR: #ffffff"><IMG=20
src=3D"http://www.cnblogs.com/Images/dot.gif"></SPAN><SPAN=20
id=3DCodehighlighter1_279_355_Open_Text><SPAN style=3D"COLOR: =
#000000">{<BR><IMG=20
src=3D"http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif"=20
align=3Dtop>&nbsp;&nbsp;&nbsp;&nbsp;Console.WriteLine(</SPAN><SPAN=20
style=3D"COLOR: #000000">"</SPAN><SPAN=20
style=3D"COLOR: =
#000000">Called&nbsp;ConcreteStrategyA.AlgorithmInterface()</SPAN><SPAN=20
style=3D"COLOR: #000000">"</SPAN><SPAN style=3D"COLOR: =
#000000">);<BR><IMG=20
src=3D"http://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlock=
End.gif"=20
align=3Dtop>&nbsp;&nbsp;}</SPAN></SPAN><SPAN style=3D"COLOR: =
#000000"><BR><IMG=20
src=3D"http://www.cnblogs.com/Images/OutliningIndicators/ExpandedBlockEnd=
.gif"=20
align=3Dtop>}</SPAN></SPAN><SPAN style=3D"COLOR: #000000"><BR><IMG=20
src=3D"http://www.cnblogs.com/Images/OutliningIndicators/None.gif"=20
align=3Dtop><BR><IMG=20
src=3D"http://www.cnblogs.com/Images/OutliningIndicators/None.gif"=20
align=3Dtop></SPAN><SPAN style=3D"COLOR: #008000">//</SPAN><SPAN=20
style=3D"COLOR: #008000">&nbsp;"ConcreteStrategyB"</SPAN><SPAN=20
style=3D"COLOR: #008000"><BR><IMG=20
src=3D"http://www.cnblogs.com/Images/OutliningIndicators/None.gif"=20
align=3Dtop></SPAN><SPAN style=3D"COLOR: #0000ff">class</SPAN><SPAN=20
style=3D"COLOR: =
#000000">&nbsp;ConcreteStrategyB&nbsp;:&nbsp;Strategy<BR><IMG=20
id=3DCodehighlighter1_418_557_Open_Image=20
onclick=3D"this.style.display=3D'none'; =
Codehighlighter1_418_557_Open_Text.style.display=3D'none'; =
Codehighlighter1_418_557_Closed_Image.style.display=3D'inline'; =
Codehighlighter1_418_557_Closed_Text.style.display=3D'inline';"=20
src=3D"http://www.cnblogs.com/Images/OutliningIndicators/ExpandedBlockSta=
rt.gif"=20
align=3Dtop><IMG id=3DCodehighlighter1_418_557_Closed_Image =
style=3D"DISPLAY: none"=20
onclick=3D"this.style.display=3D'none'; =
Codehighlighter1_418_557_Closed_Text.style.display=3D'none'; =
Codehighlighter1_418_557_Open_Image.style.display=3D'inline'; =
Codehighlighter1_418_557_Open_Text.style.display=3D'inline';"=20
src=3D"http://www.cnblogs.com/Images/OutliningIndicators/ContractedBlock.=
gif"=20
align=3Dtop></SPAN><SPAN id=3DCodehighlighter1_418_557_Closed_Text=20
style=3D"BORDER-RIGHT: #808080 1px solid; BORDER-TOP: #808080 1px solid; =
DISPLAY: none; BORDER-LEFT: #808080 1px solid; BORDER-BOTTOM: #808080 =
1px solid; BACKGROUND-COLOR: #ffffff"><IMG=20
src=3D"http://www.cnblogs.com/Images/dot.gif"></SPAN><SPAN=20
id=3DCodehighlighter1_418_557_Open_Text><SPAN style=3D"COLOR: =
#000000">{<BR><IMG=20
src=3D"http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif"=20
align=3Dtop>&nbsp;&nbsp;</SPAN><SPAN style=3D"COLOR: =
#008000">//</SPAN><SPAN=20
style=3D"COLOR: #008000">&nbsp;Methods</SPAN><SPAN style=3D"COLOR: =
#008000"><BR><IMG=20
src=3D"http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif"=20
align=3Dtop></SPAN><SPAN style=3D"COLOR: =
#000000">&nbsp;&nbsp;</SPAN><SPAN=20
style=3D"COLOR: #0000ff">override</SPAN><SPAN=20
style=3D"COLOR: #000000">&nbsp;</SPAN><SPAN=20
style=3D"COLOR: #0000ff">public</SPAN><SPAN=20
style=3D"COLOR: #000000">&nbsp;</SPAN><SPAN=20
style=3D"COLOR: #0000ff">void</SPAN><SPAN=20
style=3D"COLOR: #000000">&nbsp;AlgorithmInterface()<BR><IMG=20
id=3DCodehighlighter1_479_555_Open_Image=20
onclick=3D"this.style.display=3D'none'; =
Codehighlighter1_479_555_Open_Text.style.display=3D'none'; =
Codehighlighter1_479_555_Closed_Image.style.display=3D'inline'; =
Codehighlighter1_479_555_Closed_Text.style.display=3D'inline';"=20
src=3D"http://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlock=
Start.gif"=20
align=3Dtop><IMG id=3DCodehighlighter1_479_555_Closed_Image =
style=3D"DISPLAY: none"=20
onclick=3D"this.style.display=3D'none'; =
Codehighlighter1_479_555_Closed_Text.style.display=3D'none'; =
Codehighlighter1_479_555_Open_Image.style.display=3D'inline'; =
Codehighlighter1_479_555_Open_Text.style.display=3D'inline';"=20
src=3D"http://www.cnblogs.com/Images/OutliningIndicators/ContractedSubBlo=
ck.gif"=20
align=3Dtop>&nbsp;&nbsp;</SPAN><SPAN =
id=3DCodehighlighter1_479_555_Closed_Text=20
style=3D"BORDER-RIGHT: #808080 1px solid; BORDER-TOP: #808080 1px solid; =
DISPLAY: none; BORDER-LEFT: #808080 1px solid; BORDER-BOTTOM: #808080 =
1px solid; BACKGROUND-COLOR: #ffffff"><IMG=20
src=3D"http://www.cnblogs.com/Images/dot.gif"></SPAN><SPAN=20
id=3DCodehighlighter1_479_555_Open_Text><SPAN style=3D"COLOR: =
#000000">{<BR><IMG=20
src=3D"http://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif"=20
align=3Dtop>&nbsp;&nbsp;&nbsp;&nbsp;Console.WriteLine(</SPAN><SPAN=20
style=3D"COLOR: #000000">"</SPAN><SPAN=20
style=3D"COLOR: =
#000000">Called&nbsp;ConcreteStrategyB.AlgorithmInterface()</SPAN><SPAN=20
style=3D"COLOR: #000000">"</SPAN><SPAN style=3D"COLOR: =
#000000">);<BR><IMG=20
src=3D"http://www.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlock=
End.gif"=20
align=3Dtop>&nbsp;&nbsp;}</SPAN></SPAN><SPAN style=3D"COLOR: =
#000000"><BR><IMG=20
src=3D"http://www.cnblogs.com/Images/OutliningIndicators/ExpandedBlockEnd=
.gif"=20
align=3Dtop>}</SPAN></SPAN><SPAN style=3D"COLOR: #000000"><BR><IMG=20
src=3D"http://www.cnblogs.com/Images/OutliningIndicators/None.gif"=20
align=3Dtop><BR><IMG=20
src=3D"http://www.cnblogs.com/Images/OutliningIndicators/None.gif"=20
align=3Dtop></SPAN><SPAN style=3D"COLOR: #008000">//</SPAN><SPAN=20
style=3D"COLOR: #008000">&nbsp;"ConcreteStrategyC"</SPAN><SPAN=20
style=3D"COLOR: #008000"><BR><IMG=20
src=3D"http://www.cnblogs.com/Images/OutliningIndicators/None.gif"=20
align=3Dtop></SPAN><SPAN style=3D"COLOR: #0000ff">class</SPAN><SPAN=20
style=3D"COLOR: =
#000000">&nbsp;ConcreteStrategyC&nbsp;:&nbsp;Strategy<BR><IMG=20
id=3DCodehighlighter1_618_757_Open_Image=20
onclick=3D"this.style.display=3D'none'; =
Codehighlighter1_618_757_Open_Text.style.display=3D'none'; =
Codehighlighter1_618_757_Closed_Image.style.display=3D'inline'; =
Codehighlighter1_618_757_Closed_Text.style.display=3D'inline';"=20
src=3D"http://www.cnblogs.com/Images/OutliningIndicators/ExpandedBlockSta=
rt.gif"=20
align=3Dtop><IMG id=3DCodehighlighter1_618_757_Closed_Image =
style=3D"DISPLAY: none"=20
onclick=3D"this.style.display=3D'none'; =
Codehighlighter1_618_757_Closed_Text.style.display=3D'none'; =
Codehighlighter1_618_757_Open_Image.style.display=3D'inline'; =
Codehighlighter1_618_757_Open_Text.style.display=3D'inline';"=20
src=3D"http://www.cnblogs.com/Images/OutliningIndicators/ContractedBlock.=
gif"=20
align=3Dtop></SPAN><SPAN id=3DCodehighlighter1_618_757_Closed_Text=20
style=3D"BORDER-RIGHT: #808080 1px solid; BORDER-TOP: #808080 1px solid; =
DISPLAY: none; BORDER-LEFT: #808080 1px solid; BORDER-BOTTOM: #808080 =
1px solid; BACKGROUND-COLOR: #ffffff"><IMG=20
src=3D"http://www.cnblogs.com/Images/dot.gif"></SPAN><SPAN=20
id=3DCodehighlighter1_618_757_Open_Text><SPAN style=3D"COLOR: =
#000000">{<BR><IMG=20
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